Examples with LambdaExpr com.github.javaparser.ast.expr.LambdaExpr used on opensource projects

Example 36 with LambdaExpr

use of com.github.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class LambdaUtilTest method appendTwoMethodsToLambda.

@Test
public void appendTwoMethodsToLambda() {
    LambdaExpr l1 = parseExpression("(_this) -> _this.getDueDate()");
    LambdaExpr l2 = parseExpression("(_this) -> _this.getTime().getTime()");
    Expression expected = parseExpression("(_this) -> _this.getDueDate().getTime().getTime()");
    Expression actual = LambdaUtil.appendNewLambdaToOld(l1, l2);
    assertEquals(expected.toString(), actual.toString());
}

Example 37 with LambdaExpr

use of com.github.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class LambdaUtilTest method appendaLambdaToOld.

@Test
public void appendaLambdaToOld() {
    LambdaExpr l1 = parseExpression("(_this) -> _this.getTimeFieldAsDate()");
    LambdaExpr l2 = parseExpression("(_this) -> _this.getTime()");
    Expression expected = parseExpression("(_this) -> _this.getTimeFieldAsDate().getTime()");
    Expression actual = LambdaUtil.appendNewLambdaToOld(l1, l2);
    assertEquals(expected.toString(), actual.toString());
}

Example 38 with LambdaExpr

use of com.github.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class FromVisitor method fromConstructorExpr.

private Optional<Expression> fromConstructorExpr(String expression, ObjectCreationExpr parsedExpression) {
    MethodCallExpr fromCall = createDslTopLevelMethod(FROM_CALL);
    List<String> bindingIds = new ArrayList<>();
    for (Expression argument : parsedExpression.getArguments()) {
        final String argumentName = PrintUtil.printNode(argument);
        if (contextHasDeclaration(argumentName)) {
            bindingIds.add(argumentName);
            fromCall.addArgument(context.getVarExpr(argumentName));
        }
    }
    Expression newExpr = generateLambdaWithoutParameters(bindingIds, parsedExpression, true, Optional.empty(), context);
    if (newExpr instanceof LambdaExpr) {
        context.getPackageModel().registerLambdaReturnType((LambdaExpr) newExpr, DrlxParseUtil.getClassFromType(context.getTypeResolver(), parsedExpression.getType()));
    }
    fromCall.addArgument(newExpr);
    return of(fromCall);
}

Example 39 with LambdaExpr

use of com.github.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class AccumulateVisitor method composeTwoBindings.

private void composeTwoBindings(String binding, MethodCallExpr newBindingExpression) {
    context.findBindingExpression(binding).ifPresent(oldBind -> {
        // compose newComposedBinding using oldBind and newBindingExpression. But still keep oldBind.
        LambdaExpr oldBindLambda = oldBind.findFirst(LambdaExpr.class).orElseThrow(RuntimeException::new);
        LambdaExpr newBindLambda = newBindingExpression.findFirst(LambdaExpr.class).orElseThrow(RuntimeException::new);
        LambdaExpr tmpOldBindLambda = oldBindLambda.clone();
        Expression newComposedLambda = LambdaUtil.appendNewLambdaToOld(tmpOldBindLambda, newBindLambda);
        MethodCallExpr newComposedBinding = new MethodCallExpr(BIND_CALL, newBindingExpression.getArgument(0), newComposedLambda);
        newComposedBinding.setScope(oldBind.getScope().orElseThrow(RuntimeException::new));
        Optional<MethodCallExpr> optReactOn = oldBind.getArguments().stream().filter(MethodCallExpr.class::isInstance).map(MethodCallExpr.class::cast).filter(exp -> exp.getName().asString().equals(REACT_ON_CALL)).findFirst();
        if (optReactOn.isPresent()) {
            newComposedBinding.addArgument(optReactOn.get().clone());
        }
        // insert newComposedBinding at the first in the chain
        oldBind.setScope(newComposedBinding);
    });
}

Example 40 with LambdaExpr

use of com.github.javaparser.ast.expr.LambdaExpr in project drools by kiegroup.

the class FromVisitor method createSupplier.

private Expression createSupplier(Expression parsedExpression) {
    final LambdaExpr lambdaExpr = new LambdaExpr(NodeList.nodeList(), new ExpressionStmt(parsedExpression), true);
    MethodCallExpr fromCall = createDslTopLevelMethod(FROM_CALL);
    fromCall.addArgument(lambdaExpr);
    return fromCall;
}